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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Unrein, Julia R. Morris, Jeffrey M. Chitwood, Rob S. Lipton, Joshua Peers, Jennifer Van De Wetering, Stan Schreck, Carl B. |
| Description | Country affiliation: United States Author Affiliation: Unrein JR ( Oregon Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife, Oregon State University, Corvallis, Oregon, USA.); Morris JM ( Abt Associates (formerly Stratus Consulting Inc.), Boulder, Colorado, USA.); Chitwood RS ( Oregon Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife, Oregon State University, Corvallis, Oregon, USA.); Lipton J ( Abt Associates (formerly Stratus Consulting Inc.), Boulder, Colorado, USA.); Peers J ( Abt Associates (formerly Stratus Consulting Inc.), Boulder, Colorado, USA.); van de Wetering S ( Confederated Tribes of the Siletz Indians, Portland, Oregon, USA.); Schreck CB ( US Geological Survey, Oregon Cooperative Fish and Wildlife Research Unit, Oregon State University, Corvallis, Oregon, USA.) |
| Abstract | Many anthropogenic disturbances have contributed to the decline of Pacific lampreys (Entosphenus tridentatus), but potential negative effects of contaminants on lampreys are unclear. Lamprey ammocoetes are the only detritivorous fish in the lower Willamette River, Oregon, USA, and have been observed in Portland Harbor sediments. Their long benthic larval stage places them at risk from the effects of contaminated sediment. The authors developed experimental methods to assess the effects of contaminated sediment on the growth and behavior of field-collected ammocoetes reared in a laboratory. Specifically, they developed methods to assess individual growth and burrowing behavior. Burrowing performance demonstrated high variability among contaminated sediments; however, ammocoetes presented with noncontaminated reference sediment initiated burrowing more rapidly and completed it faster. Ammocoete reemergence from contaminated sediments suggests avoidance of some chemical compounds. The authors conducted long-term exposure experiments on individually held ammocoetes using sediment collected from their native Siletz River, which included the following: contaminated sediments collected from 9 sites within Portland Harbor, 2 uncontaminated reference sediments collected upstream, 1 uncontaminated sediment with characteristics similar to Portland Harbor sediments, and clean sand. They determined that a 24-h depuration period was sufficient to evaluate weight changes and observed no mortality or growth effects in fish exposed to any of the contaminated sediments. However, the effect on burrowing behavior appeared to be a sensitive endpoint, with potentially significant implications for predator avoidance. Environ Toxicol Chem 2016;35:2092-2102. © 2016 SETAC. |
| File Format | HTM / HTML |
| ISSN | 07307268 |
| Issue Number | 8 |
| Journal | Environmental Toxicology and Chemistry |
| Volume Number | 35 |
| e-ISSN | 15528618 |
| Language | English |
| Publisher | Wiley |
| Publisher Date | 2016-08-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Health Discipline Toxicology Discipline Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Health, Toxicology and Mutagenesis |
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